I've read the Koran. From my copy of it:
Fight against such of those who have been given the Scripture as believe not in Allah nor the Last Day ... until they pay the tribute readily, being brought lowAfter doing my research, I conclude that Muslims who deny that Islam is about the violent enslavement/killing of non-Muslims are liars who think that their audience is incapable of finding out the truth
Surah IX:29O ye who believe! Choose not for friends such of those who received the Scriptures before you
Surah V:57Then, when the sacred months have passed, slay the idolaters wherever ye find them, and take them captive, and besiege them, and prepare for them each ambush...
Surah IX:5And slay them wherever ye find them ... Such is the reward of disbelievers.
Surah II:191
Do you want me to pull some Bible verses that "justified" the crusades?
Give the kid a break. There are Muslims in the world willing to peacefully co-exist.